Masjid Agung Demak is one of the oldest mosques in Indonesia, located in the city of Demak, Central Java. Built in the late 15th century, it serves as a significant historical and cultural site for the Islamic community in Indonesia. The mosque features traditional Javanese architecture, with a distinctive tiered roof and intricate wooden carvings. The mosque is not only a place of worship but also a symbol of the spread of Islam in the region. It was established by Sunan Kalijaga, one of the nine saints known as the Wali Songo, who played a crucial role in the Islamization of Java. Today, it attracts many visitors and pilgrims.